High-reliability single-elastic-sheet type contact element and connector

Abstract

The utility model relates to a high reliability single spring type contact and connector, the contact comprises a contact end at the front end and a fixed end at the rear end, the contact end comprises a bottom plate, a support frame is fixed on the bottom plate, the front end of the support frame opposite to the bottom plate is provided with a spring, and the spring is fixed on the bottom plate. One side, facing the bottom plate, of the elastic sheet is provided with a line contact site used for being in elastic contact with an adaptive end contact piece, and the position, corresponding to the line contact site, of the bottom plate protrudes towards the direction of the line contact site to form a surface contact site which is in fixed contact with the adaptive contact piece. According to the utility model, after the contact element is inserted into an adaptive contact pin, the front-end insertion part formed by the line contact sites and the surface contact sites which are distributed oppositely is reliably contacted with the contact pin. Wherein the line contact site provides a positive pressure between the jack and the pin after plug-in while providing a plug-in and plug-out force; the surface contact site has higher electric contact reliability than line contact, and can ensure the stability of an electric contact signal in the working environments of vibration, impact and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and in particular relates to a high-reliability single-spring-type contact piece and a connector. Background Art

[0002] The servo motor is powered and transmits signals through a cable plug and a socket installed on the motor. The plugs and sockets used can generally be divided into power and coding connectors. Among them, the coding connector generally achieves stable and accurate signal transmission through signal contacts. Existing signal contacts are generally composed of a wire pressing mechanism, a supporting part, an electrical contact point, and a claw. The electrical contact part is usually formed by two conductive sheets at the front end and the plug pin at the plug end to form a line contact after being plugged in, thereby realizing signal transmission.

[0003] The working environment of the coding connector usually has factors such as vibration and impact that may cause contact failure, so there are high requirements for the reliability of the contact. The signal contact in the existing coding connector usually forms an electrical contact circuit by line contact on both sides. According to the electrical contact theory, the electrical contact form is usually divided into point contact, line contact, and surface contact, and the contact reliability increases in turn. The existing contact with line contact on both sides is relatively unreliable and there is a risk of failure during connector operation.

[0004] The springs on both sides of the socket provide the insertion and extraction force when the contacts are plugged in, and also provide the positive pressure between the socket and the pin after plugging in through the cantilever beam structure of the springs. When the coding connector encounters long-term vibration, the double spring structure will amplify the cyclic stress and transmit it to the root of the cantilever beam structure, thereby causing metal fatigue. The metal fatigue at the root of the spring will reduce the positive pressure generated by the spring, thereby increasing the risk of virtual contact between the contacts and causing contact failure. Summary of the invention

[0005] To solve the above problems, the utility model provides a high-reliability single-spring-type contact piece with a novel structure, which forms a contact portion with one side fixed and the other side elastic through the arrangement of a single-sided spring piece and a fixed convex bump, so that the contact piece has reliable contact force and a smaller risk of false contact.

[0006] The purpose of the utility model and the technical problem to be solved are achieved by adopting the following technical solutions. According to a high-reliability single-spring-type contact piece proposed by the utility model, it includes a contact end at the front end and a fixed end at the rear end, the contact end includes a bottom plate 7, a support frame 8 is fixed to the bottom plate, and a spring piece 9 is provided on the front end of the support frame 8 opposite to the bottom plate, and a line contact site 4 for elastically contacting with the adapter end contact piece is formed on the side of the spring piece 9 facing the bottom plate 7, and the position of the bottom plate 7 corresponding to the line contact site 4 protrudes toward the line contact site to form a surface contact site 3 for fixed contact with the adapter contact piece.

[0007] The purpose of the utility model and the solution to its technical problems can also be further achieved by adopting the following technical measures.

[0008] In the aforementioned high-reliability single-spring contact, the surface contact point 3 is formed by stamping the bottom plate 7 in the direction of the line contact point 4 .

[0009] The aforementioned high-reliability single-spring-type contact piece, the front ends of the base plate 7 are also provided with support parts 2 for enhancing its strength. The support parts 2 are cross beams extending along the length direction of the base plate 7. The setting of the cross beam not only enhances the strength of the front end of the contact piece, but also can form a guide and limit for the matching contact piece, and can also cooperate with the insulator to enhance the stability of the contact piece after assembly.

[0010] The tail of the high-reliability single-spring contact element is connected to the support frame 8 .

[0011] The aforementioned high-reliability single-spring contact piece, the bottom plate 7 is further provided with a claw 5 for cooperating with the insulator for positioning, so as to realize reliable positioning of the contact piece in the insulator.

[0012] In the aforementioned high-reliability single-spring contact, the claw 5 is formed by stamping on the bottom plate 7 .

[0013] In the aforementioned high-reliability single-spring contact, the base of the claw 5 is in contact with the protrusion forming the surface contact site 3 .

[0014] The aforementioned high-reliability single-spring-type contact piece, the fixed end extends in the same direction as the contact end, the fixed end includes a wire groove 6 and a wire pressing plate located on both sides of the wire groove, the wire pressing plate and the spring piece 9 are distributed on the same side of the bottom plate 7, so that the contact piece has a smaller height to meet the design requirements of miniaturization.

[0015] The high-reliability single-spring-type contact piece mentioned above is integrally formed and has more reliable performance.

[0016] Compared with the prior art, the utility model has obvious advantages and beneficial effects. By means of the above technical solution, the utility model can achieve considerable technical progress and practicality, and has wide industrial utilization value, and has at least the following advantages:

[0017] After the contact of the utility model is plugged into the adapter pin, the front plug-in portion composed of the line contact site composed of the relatively distributed elastic cantilever and the raised surface and the surface contact site is in reliable contact with the pin. Among them, the line contact site provides a plug-in force while providing a positive pressure between the plug hole and the pin after insertion. Compared with the double-spring-leaf contact, the springs are reduced, so the plug-in force will be softer. The surface contact site has a higher electrical contact reliability than the line contact, and can ensure the stability of the electrical contact signal in working environments such as vibration and impact. In addition, the single spring-leaf structure will reduce the cyclic stress transmitted to the root of the cantilever beam structure, thereby reducing the risk of false contact between the contacts and improving reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a high-reliability single-spring-type contact of the utility model;

[0019] Figure 2 It is a cross-sectional view of the high-reliability single-spring-type contact of the utility model;

[0020] Figure 3 This is a schematic diagram of the use status of the high-reliability single-spring contact of the utility model.

[0021]

Main component symbol description

[0022] 1: Wire pressing mechanism

[0023] 2: Supporting part

[0024] 3: Surface contact site

[0025] 4: Line contact site

[0026] 5: Claw

[0027] 6: Wire Trough

[0028] 7: Bottom plate

[0029] 8: Support frame

[0030] 9: Shrapnel DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the high-reliability single-spring contact proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0032] See also Figure 1-3, which is a schematic diagram of the structure of each part of the high-reliability single-spring-type contact of the utility model, the contact includes a contact end at the front end and a fixed end at the rear end, the contact end is used to adapt and contact with the adapter end contact, and the fixed end is used to crimp and fix with the wire. In this embodiment, the fixed end includes a wire slot 6 for accommodating the wire and a wire pressing mechanism 1 for pressing the wire in the wire slot 6, the wire pressing mechanism is a wire pressing plate relatively distributed on both sides of the wire slot 6. Preferably, there are multiple groups of wire pressing plates, each group includes two relatively distributed wire pressing plates, and different groups of wire pressing plates are spaced apart along the extension direction of the contact, which are used to realize wire pressing at different positions of the wire slot 6 to ensure the reliability of wire pressing.

[0033] The contact end includes a bottom plate 7 connected to the wire slot 6, a support frame 8 is fixed to the rear side of the bottom plate 7, and a spring piece 9 is provided at the front end of the support frame 8 opposite to the bottom plate 7. The spring piece 9 extends forward along the length direction of the bottom plate 7 and forms a line contact site 4 at the front end. The line contact site 4 faces the bottom plate 7 and is used to elastically contact with the adapter end contact. In this embodiment, the bottom plate 7, the support frame 8 and the spring piece 9 are integrally formed, wherein the bottom plate 7 and the support frame 8 form a rectangular support structure, the contact cantilever 9 is formed by extending forward from the front end of the support structure, and the line contact site 4 is formed by the bending portion formed by bending the front end of the contact cantilever 9 toward one side of the bottom plate 7.

[0034] The position on the bottom plate 7 corresponding to the line contact site 4 also protrudes in the direction of the line contact site 4 to form a surface contact site 3, and the line contact site 4 and the surface contact site 3 together constitute the plug-in portion of the front end of the contact end, so as to achieve reliable contact with the contact piece of the adapter end. Preferably, the surface contact site 3 is formed by stamping the bottom plate 7 toward one side of the spring sheet 9, thereby forming a pit between the other side of the surface contact site 3 and the bottom plate 3, but it is not limited to this.

[0035] In this embodiment, the front ends of the bottom plate 7 are also provided with support parts 2 on both sides to enhance the strength of the bottom plate 7. Preferably, the support parts 2 are two parallel beams extending along the length direction of the contact piece. The provision of the beams can not only enhance the strength of the contact piece, but also guide and limit the insertion of the adapter end contact piece. Preferably, the beams are connected to the support frame.

[0036] In this embodiment, the base plate 7 is also provided with a claw 5 for cooperating with the insulator for positioning. The claw 5 can be inserted into the groove on the insulator when the contact is assembled. At the same time, the supporting part 2 cooperates with the insulator to prevent the contact from rotating and deflecting in the insulator, thereby ensuring the reliable assembly of the contact in the insulator.

[0037] In this embodiment, the claw 5 is formed by stamping the bottom plate 7 toward the side away from the spring sheet 9. Preferably, the claw 5 is arranged close to the protrusion forming the surface contact site 3. The root of the claw 5 is connected to the protrusion forming the surface contact site.

[0038] In this embodiment, the wire pressing plate constituting the wire pressing mechanism 1 is parallel to the crossbeam constituting the support part 2 and is located on the same side of the bottom plate 7, thereby effectively reducing the height of the contact piece after wire making. In this embodiment, the contact piece is integrally formed, and is formed by cutting, folding, and pressing a plate. Preferably, the wire trough 6 is offset in the direction away from the side of the support part 2 on the bottom plate 7 through a single bend, but it is not limited thereto.

[0039] After the contact of the utility model is plugged into the adapter pin, the front plug-in part composed of the line contact site 4 composed of the relatively distributed elastic cantilever and the raised surface and the surface contact site 3 is in reliable contact with the pin. Among them, the line contact site 4 provides a positive pressure between the plug hole and the pin after insertion while providing the plug-in force. Compared with the double-spring-leaf contact, the springs are reduced, so the plug-in force will be softer. The surface contact site has a higher electrical contact reliability than the line contact, and can ensure the stability of the electrical contact signal in working environments such as vibration and impact. In addition, the single spring-leaf structure will reduce the cyclic stress transmitted to the root of the cantilever beam structure, thereby reducing the risk of false contact between the contacts and improving reliability.

[0040] The present invention further provides a connector, which includes the above-mentioned high-reliability single-spring-type contact piece.

[0041] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A high-reliability single-spring contact, comprising a contact end at the front end and a fixed end at the rear end, characterized in that: The contact end includes a base plate, on which a support frame is fixed, and a spring sheet is provided on the front end of the support frame opposite to the base plate, and a line contact site for elastically contacting the adapter contact piece is formed on the side of the spring sheet facing the base plate, and the base plate protrudes in the direction of the line contact site at a position corresponding to the line contact site to form a surface contact site that is fixedly contacted with the adapter contact piece.

2. The high reliability single spring contact according to claim 1, characterized in that: The surface contact site is formed by punching the bottom plate in the direction of the line contact point.

3. The high reliability single spring contact according to claim 1, characterized in that: Support parts for enhancing the strength of the bottom plate are also provided on both sides of the front end of the bottom plate, and the support parts are cross beams extending along the length direction of the bottom plate.

4. The high reliability single spring contact according to claim 3, characterized in that: The tail of the cross beam is connected to the supporting frame.

5. The high-reliability single-spring contact according to any one of claims 1 to 4, characterized in that: The bottom plate is also provided with claws for cooperating with the insulator for positioning.

6. The high reliability single spring contact according to claim 5, characterized in that: The clamping claws are formed by punching out from the bottom plate.

7. The high reliability single spring contact according to claim 6, characterized in that: The base of the claw is connected to the protrusion forming the surface contact point.

8. The high reliability single spring contact according to claim 6, characterized in that: The fixed end and the contact end extend in the same direction, and the fixed end includes a wire groove and wire pressing plates located on both sides of the wire groove. The wire pressing plates and the spring sheets are distributed on the same side of the bottom plate.

9. The high-reliability single-spring contact according to any one of claims 1-4 and 6-8, characterized in that: The contact piece is integrally formed.

10. A connector, characterized in that: It comprises the high-reliability single-spring contact piece as described in any one of claims 1-9.

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